<template>
  <div class="wrapper" ref="wrapper">
    <div class="content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
  import BScroll from 'better-scroll'

  export default {
    name: "Scroll",
    props:{
      probeType:{
        type:Number,
        default:0,
      },
      pullUpLoad:{
        type:Boolean,
        default: false
      },
    },
    data(){
      return{
        scroll:null,
      }
    },
    mounted() {
      //创建BScroll对象
      this.scroll = new BScroll(this.$refs.wrapper,{
        click: true,
        probeType:this.probeType,
        pullUpLoad: this.pullUpLoad,
      })

      //2.监听滚动的位置
      if (this.probeType ===2 || this.probeType === 3){
        this.scroll.on('scroll',(position) => {
          // console.log(position);
          this.$emit('scroll',position)
        })
      }

      //3.监听scroll滚动到底部
      if(this.pullUpLoad){
        this.scroll.on('pullingUp', () => {
            this.$emit('pullingUp')
        })
      }
    },

    methods:{
      scrollTo(x, y, time = 300){
        this.scroll && this.scroll.scrollTo(x, y, time)
      },
      finishPullUp(){
        this.scroll && this.scroll.finishPullUp()
      },
      refresh(){
        // console.log('---');
        this.scroll && this.scroll.refresh()
      },
    }
  }
</script>

<style scoped>

</style>
